The installation site of the speed reducer should be isolated from heat radiation. If it is installed in a very hot or cold place, there must be cooling and cooling measures and measures to heat the lubricant to ensure that it can be started normally.
The concrete foundation or metal base plate for installing the speed reducer must have sufficient rigidity; the ground bolts are buried in sufficient depth, and the shims are used to level the level, and the thickness of the shims should not be less than 1mm; in order to ensure that the load is stable and not deformed during operation.
Find the level, and power machine, work machine centering, should be carried out separately.
Leveling accuracy requirements are generally 0.02 ~ 0.05mm / m, leveling in the body of the horizontal surface of the extended protruding surface or parallel to the horizontal surface of the processing surface. The higher the accuracy of centering the better, to consider the coupling used to compensate for the error in centering, the size of the tolerance, the general axis intersection angle error should not be greater than 10”, the translation error is not greater than 0.1mm.
The rust inhibitor and corrosion inhibitor on the shaft extension must be cleaned before installing the coupling, sprocket and other parts on the shaft extension. Removal of rust inhibitors, corrosion inhibitors should not be sandpaper, files, scrapers and other easy to hurt the shaft with the surface of the tool. Installation of couplings, sprockets, etc. should not be hit by a heavy hammer, and should use the method of thermal expansion and contraction of the set.
Shaft extension on the sprocket, pulley drive generated by the pressure of the shaft force is best to point to the installation of the foundation.
If the connection with the power machine adopts the hydraulic coupling. Due to the large mass of the fluid coupling, and start a large centrifugal force, should avoid the gravity of the fluid coupling, centrifugal force all play a role in the gearbox shaft extension, that is, the fluid coupling should not be suspended in the gearbox shaft extension, and should be jointly supported with the power machine. So that the support point of the shaft extension does not produce additional bending.
Reduction stepping motor compared with ordinary geared motor, reduction stepping motor can realize speed and position control, ordinary geared motor can not realize positioning control.
So, what does stepper motor geared motor misalignment mean?
Stepper motor gearhead misalignment is out of step, and out of step is divided into lost step and overstep. When the stepper motor works normally, it moves one step angle for every control pulse received, that is, one step forward. If the control pulse is input continuously, the motor will rotate continuously accordingly. When the step is lost, the number of steps the rotor advances is less than the number of pulses; when the step is crossed, the number of steps the rotor advances is more than the number of pulses. The number of steps of one lost step and overstep is equal to the integer times of the number of running beats. When the step loss is serious, the rotor will stay in one position or vibrate around one position, and when the step overrun is serious, the drag structure will overshoot.
About the analysis of step motor reducer lost step and out of step:
Stepping motor reducer improper selection, motor torque is not enough or the inertia of the object movement exceeds the self-locking force of the motor, resulting in the loss of step or lost step.
Improper drive selection, supporting the drive current is small, affecting the normal operation of the motor, now on the market a lot of current false labeling drive, take the peak current as the rated current to fool consumers, drive selection rated current should be greater than the stepper motor gearhead rated current of 1.2-1.5 times.
Improper selection of matching power supply, matching power supply should be 1.5-2 times the rated power supply drive, power supply false labeling is more serious than the drive false labeling.
The control part should be excluded from interference, away from the frequency converter, anti-static.
Blake, Chu
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